JP2021097346A5 - Electronic device and its control method and program - Google Patents
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- JP2021097346A5 JP2021097346A5 JP2019228208A JP2019228208A JP2021097346A5 JP 2021097346 A5 JP2021097346 A5 JP 2021097346A5 JP 2019228208 A JP2019228208 A JP 2019228208A JP 2019228208 A JP2019228208 A JP 2019228208A JP 2021097346 A5 JP2021097346 A5 JP 2021097346A5
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- 238000000034 method Methods 0.000 title claims description 5
- 230000010287 polarization Effects 0.000 claims description 31
- 238000011156 evaluation Methods 0.000 claims description 23
- 238000003384 imaging method Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 2
- 238000005070 sampling Methods 0.000 claims 2
Description
本発明は、電子機器とその制御方法およびプログラムに関して、特に、被写体を撮像して画像データを取得する際の画像の明るさを制御する際に用いる評価値の取得方法に関する。 The present invention relates to an electronic device and its control method and program, and more particularly to a method for obtaining an evaluation value used when controlling the brightness of an image obtained by imaging a subject and obtaining image data .
本発明の目的は、ユーザによる煩雑な操作を必要とせず、自動的な露出制御により不自然な明るさの画像が得られることを低減することである。 SUMMARY OF THE INVENTION An object of the present invention is to reduce the possibility that an image with unnatural brightness is obtained by automatic exposure control without requiring complicated operations by the user.
上述の問題点を解決するため、本発明の電子機器は、異なる複数の偏光角度を有する領域を備えた偏光フィルタを介して得られた被写体の光学像を撮像可能な第１の撮像素子から出力された信号に基づく複数の画像データに基づいて、被写体の偏光情報を取得する情報取得手段と、被写体を撮像して画像データを取得する際の画像の明るさを制御する明るさ制御手段と、前記明るさ制御手段が明るさを制御する際に用いる評価値を、前記複数の画像データの少なくとも１つに基づいて取得する評価値取得手段と、を有し、前記複数の画像データのそれぞれは、前記偏光フィルタの異なる複数の偏光角度を有する領域を介して得られた偏光角度が異なる画像データであって、前記評価値取得手段は、前記偏光情報に基づいて、前記評価値を取得する際の前記複数の画像データに対する重みづけ度合を設定することを特徴とする。 In order to solve the above-described problems, the electronic device of the present invention provides a first imaging device capable of capturing an optical image of a subject obtained through a polarizing filter having regions with a plurality of different polarization angles. Information acquisition means for acquiring polarization information of a subject based on a plurality of image data based on the signals output from the camera; and brightness control means for controlling the brightness of an image when capturing the subject and acquiring image data and evaluation value acquisition means for acquiring an evaluation value used when the brightness control means controls brightness based on at least one of the plurality of image data , Each image data is image data with different polarization angles obtained through a plurality of regions having different polarization angles of the polarizing filter, and the evaluation value acquisition means obtains the evaluation value based on the polarization information is set to the degree of weighting for the plurality of image data when obtaining .
本発明によれば、ユーザによる煩雑な操作を必要とせず、自動的な露出制御により不自然な明るさの画像が得られることを低減することができる。 According to the present invention, it is possible to reduce the possibility that an image with unnatural brightness is obtained by automatic exposure control without requiring complicated operations by the user.
Claims (15)
被写体を撮像して画像データを取得する際の画像の明るさを制御する明るさ制御手段と、
前記明るさ制御手段が明るさを制御する際に用いる評価値を、前記複数の画像データの少なくとも１つに基づいて取得する評価値取得手段と、
を有し、
前記複数の画像データのそれぞれは、前記偏光フィルタの異なる複数の偏光角度を有する領域を介して得られた偏光角度が異なる画像データであって、
前記評価値取得手段は、前記偏光情報に基づいて、前記評価値を取得する際の前記複数の画像データに対する重みづけ度合を設定することを特徴とする電子機器。 Based on a plurality of image data based on signals output from a first imaging device capable of capturing an optical image of the subject obtained through a polarizing filter having regions with a plurality of different polarization angles, the subject an information acquiring means for acquiring polarization information of
brightness control means for controlling the brightness of an image when capturing an object and obtaining image data;
evaluation value acquisition means for acquiring an evaluation value used when the brightness control means controls brightness based on at least one of the plurality of image data;
has
Each of the plurality of image data is image data with different polarization angles obtained through regions having a plurality of different polarization angles of the polarizing filter,
The electronic device , wherein the evaluation value obtaining means sets a weighting degree for the plurality of image data when obtaining the evaluation value based on the polarization information.
前記評価値取得手段は、前記評価値として、被写体の測光値を取得することを特徴とする請求項１に記載の電子機器。2. The electronic device according to claim 1, wherein said evaluation value obtaining means obtains a photometric value of a subject as said evaluation value.
前記評価値取得手段は、撮像準備が指示されたことに応じて前記第１の撮像素子を用いて取得された前記複数の画像データのうちの少なくとも１つに基づいて、前記評価値を取得することを特徴とする請求項１乃至８の何れか１項に記載の電子機器。The evaluation value acquiring means acquires the evaluation value based on at least one of the plurality of image data acquired using the first imaging element in response to an instruction to prepare for imaging. The electronic device according to any one of claims 1 to 8, characterized in that:
前記第１の撮像素子とは異なり、偏光フィルタを介することなく得られた被写体の光学像を撮像する第２の撮像素子を有し、
前記評価値取得手段は、所定の条件に応じて、前記第１の撮像素子から出力された信号に基づく画像データ、または、前記第２の撮像素子から出力された信号に基づく画像データの何れか一方に基づいて前記評価値を取得することを特徴とする請求項１乃至８の何れか一項に記載の電子機器。 the first imaging element;
Unlike the first imaging device, having a second imaging device that captures an optical image of the subject obtained without passing through a polarizing filter,
The evaluation value obtaining means obtains either image data based on the signal output from the first imaging device or image data based on the signal output from the second imaging device according to a predetermined condition. 9. The electronic device according to any one of claims 1 to 8 , wherein the evaluation value is obtained based on one.
前記評価値取得手段は、前記第１の撮像素子から出力された信号のみに基づいて前記評価値を取得することを特徴とする請求項１０に記載の電子機器。 characterized in that the predetermined condition is the type of image data to be acquired,
11. The electronic device according to claim 10 , wherein the evaluation value acquisition means acquires the evaluation value based only on the signal output from the first imaging device.
被写体を撮像して画像データを取得する際の画像の明るさを制御する際に用いる評価値を、前記複数の画像データの少なくとも１つに基づいて取得する評価値取得工程と、
を有し、
前記複数の画像データのそれぞれは、前記偏光フィルタの異なる複数の偏光角度を有する領域を介して得られた偏光角度が異なる画像データであって、
前記評価値取得工程では、前記偏光情報に基づいて、前記評価値を取得する際の前記複数の画像データに対する重みづけ度合を設定することを特徴とする電子機器の制御方法。 Based on a plurality of image data based on signals output from a first imaging device capable of capturing an optical image of the subject obtained through a polarizing filter having regions with a plurality of different polarization angles, the subject an information acquisition step of acquiring polarization information of
an evaluation value obtaining step of obtaining, based on at least one of the plurality of image data, an evaluation value used for controlling the brightness of an image when an object is imaged to obtain image data;
has
Each of the plurality of image data is image data with different polarization angles obtained through regions having a plurality of different polarization angles of the polarizing filter,
In the evaluation value obtaining step , a weighting degree for the plurality of image data when obtaining the evaluation value is set based on the polarization information .
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| JP2019228208A JP7446804B2 (en) | 2019-12-18 | 2019-12-18 | Imaging device, its control method, and program |
| US17/121,105 US11503218B2 (en) | 2019-12-18 | 2020-12-14 | Electronic device for executing predetermine processing based on image data acquired via filters having different polarization angles, control method of the same, and storage medium |
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| JP2001133841A (en) | 1999-11-02 | 2001-05-18 | Canon Inc | Optical device |
| JP2001264845A (en) | 2000-03-15 | 2001-09-26 | Canon Inc | Camera |
| JP2001264610A (en) | 2000-03-16 | 2001-09-26 | Canon Inc | Camera |
| JP2001343677A (en) | 2000-05-31 | 2001-12-14 | Canon Inc | Camera incorporating filter |
| JP2014183516A (en) | 2013-03-21 | 2014-09-29 | Nikon Corp | Camera |
| JP2016085248A (en) | 2014-10-23 | 2016-05-19 | キヤノン株式会社 | Exposure computation device |
| JP2017062281A (en) | 2015-09-24 | 2017-03-30 | キヤノン株式会社 | Imaging device |
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| US10334180B1 (en) * | 2018-02-26 | 2019-06-25 | Motorola Mobility Llc | Digital image capture with a polarizer at different rotation angles |
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